upper and lower中文什么意思

上和下

上及下

• upper:    adj. 1.(更)上面的，上方的， ...
• lower:    vi.,n. ＝lour.
• lower and upper:    上和下,低与高

例句与用法

更多例句：  下一页

1. Two sealing blocks are needed for both upper and lower surfaces .
   上下翼面各需要用两个密封嗔块。
2. Confidence limits are the upper and lower limits of the confidence interval .
   置信限是指置信区间的界限。
3. Both the upper and lower sandstone units of the precipice are oil-bearing .
   普雷西皮斯的上部和下部砂岩单元都含油。
4. The upper and lower jaws possess straight tooth rows and the jaw arches are almost rectangular in shape .
   上、下颌具有直的齿列，而颌弓几乎呈直角形。
5. This variation in speed results in different distances being traversed during the upper and lower halves of the cycle .
   速度的这种变化使得上半周和下半周所通过的距离不同。